Monographs Details: Lomagramma
Authority: Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.
Scientific Name:Lomagramma
Description:Species Description - Scandent fems of medium size. Rhizome becoming very elongate (to 20 m), rather sparsely clothed with scales. Fronds short-stipitate; blades 1-pinnate with toothed or serrate pinnae, completely dimorphic; lateral pinnae articulate to the rhachis and eventually deciduous; rhachis ending in a non-articulate terminal pinna; veins reticulate without included free veinlets, but with numerous short, free, slightly enlarged tips not reaching the margins; tissue herbaceous, naked, translucent. Fertile fronds with greatly contracted pinnae; sporangia bome on abaxial surface, rarely also on margins and upper surface; indusium absent; gland-tipped paraphyses present; spores ellipsoid to spheroid, monolete, with prominent winglike folds and minutely echinate surface, or else without perispore and smooth.


Type Species. Lomagramma pteroides J. Smith.

A mostly paleotropical genus of about 20 species, a single one occurring in the American tropics. The generic name is derived from the Greek loma, border + gramme, line, because the type species bears its sporangia in lines along the margins of the fertile pinnae. n

Special Literature. Holttum, R. E. 1937. The genus Lomagramma, Gard. Bull. Straits Settlem. 9:190-221; Tryon, R. M . & A. F. Tryon. 1982. Ferns and allied plants, pp. 613-616,9 figs.